Juan Zavala Jr. and his wife Pilar would sometimes sit around with friends in their native Argentina and ponder dinner-by-delivery choices. Inevitably it would come down to pizza or empanadas, and just as inevitably, they'd choose the latter. It occurred to Juan that maybe some of the 40 million Hispanics living in the United States might be thinking along the same lines. Long story short: Light bulb goes off, and some time later, the couple opens Half Moon Empanadas on Washington Avenue. "The first and only in Miami Beach," Pilar claims, "that makes the empanadas entirely from scratch, in house." Patrons can observe workers carefully crafting the turnovers through an open window in the back of the clean, contemporary venue. The empanadas come baked or fried, their flaky crusts filled with all manner of ingredients that are both traditional (beef, chicken, or ham and cheese) and nontraditional (smoked pancetta with mozzarella and plum sauce). Price is $1.99 each, six for $9.99, and a dozen for $17.99. Half Moon is open most days 11 to 11 and Thursday through Saturday from 10 a.m. to 6 a.m. — and yes, they deliver.